[OpenSIPS-Users] Opensips : Diaglog Topology hidding and ACK Loop

[Bogdan-Andrei Iancu]

Hi Pierre-Yves,

Thanks for the detailed report - indeed, it seems to be a problem with 
the dialog matching (for sequential request) when having topology hiding 
in combination with spiraling (as your call goes twice through opensips 
with topo hiding).
We will work on a patch as fast as possible (the fix was identified).

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 10/31/2012 04:59 PM, Pierre-Yves Marche wrote:
> Hello,
>
> I'm facing an issue of ACK Looping using opensips.
>
> the configuration is the following :
> - Opensips v1.8.1 (same problem with 1.7.2).
>   - using dialog "topology hidding" feature.
>   - using 2 @IPs (one to reach customers, one to reach SIP Platform) 
> (mhomed=yes)
>
>
> Customer1/2 <--->Opensips (topology hidding) <----> SIP Platform
>
> The call flow is the following: Customer1 call Customer2, both are 
> connected on the same Opensips
> (when Customer1 and Customer2 are located on different opensips, no 
> problems)
> Customer1 <-->opensips <--->SIP Platform <-->opensips <-->Customer2
>
>
> INVITE/180/200 sequence is working well.
>
> But the ACK of the 200 OK is looping between Customer2 -->Opensips 
> -->SIP Plateform -->*Opensips -->SIP Platform--->Opensips*... instead 
> of doing directly
> Customer2--->Opensips --->SIP Plateform -->Opensips -->Customer1
>
>
> Attached, a network capture taken on opensips server.
>
>
> I had a look at "dlg_list", 2 dialogs are created for this call. Might 
> be a problem with did matching ? I tested with
> modparam("dialog", "dlg_match_mode", 0) and
> modparam("dialog", "dlg_match_mode", 2)
>
>
> Could someone help me fixing the issue ? Do you have some hints of the 
> root cause of issue ?
>
>
> Regards,
> Pierre-Yves
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20121101/7dbc514e/attachment.htm>